A thousand times this. I used OSX at one job where everyone else was too and was appalled at how bad it is for getting work done. It's pretty and shiny but broken by design in terms of usability. Switching windows is a pain in the ass (different shortcuts to 'alt-tab' between windows of the same application), maximizing a window doesn't work properly, no way to change the window manager. Those are just my gripes with the GUI. As parent pointed out, the best way to do *nix-based work on OSX is to run linux on a VM. This throws the 'is unix-like' argument out the window.

So a crap GUI, crippled CLI, very questionable company policies and politics and to top it off it costs twice as much as everything else. You have to be out of your mind to buy into this.